CVE-2019-11596

mediumpriority · track · 31EPSS 0.030 · 87 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.96% (87th) EPSS

CVSS 5 · medium

Is it mine?

13 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · redhat_csaf

EPSS · scored 2026-10-27

In memcached before 1.5.14, a NULL pointer dereference was found in the "lru mode" and "lru temp_ttl" commands. This causes a denial of service when parsing crafted lru command messages in process_lru_command in memcached.c.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedmemcached-0:1.4.39-3.el7ost.ppc64le as a component of Red Hat OpenStack Platform 13.0redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:5583
Fixedmemcached-0:1.4.39-3.el7ost.src as a component of Red Hat OpenStack Platform 13.0redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:5583
Fixedmemcached-0:1.4.39-3.el7ost.src as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Serverredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:5583
Fixedmemcached-0:1.4.39-3.el7ost.x86_64 as a component of Red Hat OpenStack Platform 13.0redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:5583
Fixedmemcached-0:1.4.39-3.el7ost.x86_64 as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Serverredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:5583
Fixedmemcached-debuginfo-0:1.4.39-3.el7ost.ppc64le as a component of Red Hat OpenStack Platform 13.0redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:5583
Fixedmemcached-debuginfo-0:1.4.39-3.el7ost.x86_64 as a component of Red Hat OpenStack Platform 13.0redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:5583
Fixedmemcached-debuginfo-0:1.4.39-3.el7ost.x86_64 as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Serverredhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2020:5583

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.06.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · Red Hat Product Security US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-476USprimaryCWE-476US

affected products (13)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
canonical ubuntu linux= 18.04nvdUScpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
canonical ubuntu linux= 18.10nvdUScpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
canonical ubuntu linux= 19.04nvdUScpe:2.3:o:canonical:ubuntu_linux:*:*:*:*:*:*:*:*
memcached memcached< 1.5.14nvdUScpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:*
memcached-0:1.4.39-3.el7ost.ppc64le as a component of Red Hat OpenStack Platform 13.0all versionsfixedredhat_csafUS
memcached-0:1.4.39-3.el7ost.src as a component of Red Hat OpenStack Platform 13.0all versionsfixedredhat_csafUS
memcached-0:1.4.39-3.el7ost.src as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Serverall versionsfixedredhat_csafUS
memcached-0:1.4.39-3.el7ost.x86_64 as a component of Red Hat OpenStack Platform 13.0all versionsfixedredhat_csafUS
memcached-0:1.4.39-3.el7ost.x86_64 as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Serverall versionsfixedredhat_csafUS
memcached-debuginfo-0:1.4.39-3.el7ost.ppc64le as a component of Red Hat OpenStack Platform 13.0all versionsfixedredhat_csafUS
memcached-debuginfo-0:1.4.39-3.el7ost.x86_64 as a component of Red Hat OpenStack Platform 13.0all versionsfixedredhat_csafUS
memcached-debuginfo-0:1.4.39-3.el7ost.x86_64 as a component of Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Serverall versionsfixedredhat_csafUS

advisories (1)

Vendor and ecosystem advisories describing this.

RHSA-2020:5583Red Hat Security Advisory: memcached security update2020-12-16csaf · redhat_csafUS
An update for memcached is now available for Red Hat OpenStack Platform 13 (Queens). Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd redhat_csaf NVD CVE.org MITRE

published 2019-04-29modified 2026-06-17

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references (33)

External citations — patches, advisories, analysis.

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